Coytee Posted August 11, 2009 Share Posted August 11, 2009 Stumbled onto a thread about this on AK site. http://www.zeroimpedance.com/Zero-New.html Since you can't ever get something for nothing.... what's the tradeoff of using one of these and what exactly (in stoopid peoples talk so I can understand it) does it do and how? Quote Link to comment Share on other sites More sharing options...
db101 Posted August 11, 2009 Share Posted August 11, 2009 It converts speaker load impedence, for instance say you have a 4 ohm speaker, you put the Zero between your amp and speaker and this will let the amp see either an 8 or 16 ohm load. This is especially important with OTL amps because they work best with high imp. speakers. I've never used them but from what I've read there isn't any degradation in sound quality with them installed. Music Reference is now designing an OTL amp that will have Zero's built into the amp. Quote Link to comment Share on other sites More sharing options...
Edgar Posted August 11, 2009 Share Posted August 11, 2009 They do the same thing that the output transformers on a tube amp do. The only difference is magnitude. Tubes like a load of a few thousand Ohms, while actual speaker loads are only a few Ohms. The output transformers make the speaker load of a few Ohms look like a few thousand Ohms to the tubes. In the case of the Zeroes, the transformers make the speaker load of a few Ohms look just a little larger, maybe two or four times as large. Some amplifiers like the modestly higher load impedance. I know Paul Speltz from my former affiliation with the Audio Society of Minnesota. I found him to be a straight-shooter. Greg Quote Link to comment Share on other sites More sharing options...
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